bugfix

disk.py

@@ -40,7 +40,7 @@ class Disk(object):
     CREATE_FORMATS = ['qcow2', 'raw']
     CREATE_FORMATS = ['qcow2', 'raw']
 
 
     def __init__(self, dir, name, format, type, size,
     def __init__(self, dir, name, format, type, size,
-                 base_name, actual_size=0):
+                 base_name, actual_size=0, cache_size=0):
         # TODO: tests
         # TODO: tests
         self.name = name
         self.name = name
         self.dir = os.path.realpath(dir)
         self.dir = os.path.realpath(dir)